Topic: iPhone 5S

The likelihood of a new or revised 4-inch iPhone remains uncertain, as even rumors from Apple's supply chain disagree about whether the company will continue to build new devices in the smaller form factor.

After decades spent in development, thermal imaging hardware has finally trickled down to the consumer, bringing with it the ability to "see" and measure infrared radiation using something as small as an iPhone. FLIR was the first to bring an iOS-compatible offering to market, but is now challenged by startup Seek, which stuffed similar tech into a smaller package at a lower price point.

The jump from the iPhone 5 series's 4-inch form factor to the 4.7-inch display on the iPhone 6 is a big change that might not appeal to everyone. Thankfully, Apple offers a 14-day return policy, and still continues to sell the 4-inch iPhone 5s and iPhone 5c, for those who might find themselves with an oversized case of buyers' remorse.

Apple's new iPhone 6 and iPhone 6 Plus are now officially available for pre-order, but buyers still need to decide what to do with their old device. As in years past, AppleInsider takes a look at nearly a dozen big-name buyback services and retailers looking to attract your iPhone trade-ins over the next several weeks. [Updated Pricing, Offers]

With preorders for Apple's next-generation iPhone beginning tonight, AppleInsider takes a look at the precautions iPhone owners planning to sell or trade their old handset for a brand-new iPhone 6 or iPhone 6 Plus need to take before divesting themselves of their passť device.

Readers looking to sell their old iPhone to help pay for a new iPhone 6 have until midnight to take advantage of Gazelle's extended price lock, which lets you lock in a cash offer for your old iPhones that's good for 45 days, meaning you won't be required to send it in for another month and a half. [Updated to note expiration of Gazelle's extended price lock promo]

Last week, Gazelle began offering customers the ability to lock in cash trade-in prices ahead of Apple's anticipated Sept. 9 "iPhone 6" unveiling, and for the next 48 hours, AppleInsider readers can get an additional $10 cash bonus on their iPhone 5s trade in thanks to an exclusive partnership.

As iPhone resellers dump existing stock in preparation of an impending next-generation refresh, U.S. mobile carrier T-Mobile will supposedly cut up to $50 off device-only pricing in an across-the-line sale, according to leaked internal documents.

Walmart on Wednesday announced an aggressive 90-day iPhone sale that shaves $20 off Apple's 16GB iPhone 5s and about $28 off the 16GB iPhone 5c, bringing the latter model's up-front cost down to less than a dollar.

Apple on Saturday unveiled "Dreams," the latest in its ongoing series of television advertisements touting the versatility of the iPhone 5s and the wide range of third-party applications and accessories compatible with the handset.

After being slapped with an injunction because of similarities to BlackBerry keyboards, the Typo physical keyboard for iPhone has been redesigned in a new second-generation model that will begin shipping in mid-September.

Building on its recent "case+" system of modular iPhone accessories, Logitech on Wednesday announced the "protection+" slim fit case and two accompanying car mounts, one of which was part of the original $200 set.

Announced by small tech firm Devant earlier this week, the Pond Wireless ecosystem of products looks to bring Qi wireless charging to Apple's iPhone 5 and iPhone 5s with a "Made for iPhone" charging case, tray and fob adapter.